On Fri, 15 May 1998, Rainer Toebbicke wrote:
> 3. we bought IBM SSA disks earlier this year and are about to introduce
> them into the AFS service. The RAID-5 is implemented on the SSA host
> attachment card. The disks are 9GB disks and we plan to set them up as
> 4+1 configurations as in the Solaris case. Our benchmarks show that the
> RAID is slower than the RSM2000, but still significantly faster than
> plain disks RAIDed in software.
We have those SSA RAID-5 partitions since last september in production
for the (AFS) home-directories of our users. One server has 32 4.5 GB
disks which we grouped to three 9+1 RAIDs + 2 hot spares, The other one
has 8 9 GB disks which make one 6+1 RAID and 1 hot spare.
We are very pleased with the performance and reliability.
- Hartmut
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Hartmut Reuter e-mail [EMAIL PROTECTED]
phone +49-89-3299-1328
RZG (Rechenzentrum Garching) fax +49-89-3299-1301
Computing Center of the Max-Planck-Gesellschaft (MPG) and the
Institut fuer Plasmaphysik (IPP)
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